Let \( S=\{x: x \) is a positive multiple of 3 less than 100\( \} P=\{x: x \) is a prime number ...

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Let \( S=\{x: x \) is a positive multiple of 3 less than 100\( \} P=\{x: x \) is a prime number less than 20\( \} \) Then, \( n(S)+n(P)= \)
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